Smallville Season5 Episode18 summary

Maddie is a very special girl who possesses the ability to control things made of glass; she is left in the care of the Kents after her foster-mother was killed.She and Clark grow fond of each other before she is taken by her biological father, Tyler, who killed her mother and her foster-mother. Clark finds them and brings her back and hands Tyler to the police.

Tyler escapes and holds Martha hostage in exchange for his daughter; but he is confronted by Maddie who is about to kill him with glass fragments.Clark convinces her that if she killed her father, she would become him, a killer, she relents. At the end, Maddie reluctantly leaves to live with her grandmother.